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Sections of the trans-Alaska pipeline run above the ground and are supported by vertical steel shafts (k = 25 W/m · K) that are 1 m long and have a cross-sectional area of 0.005 m2. Under normal operating conditions, the temperature variation along the length of a shaft is known to be governed by an expression of the form T = 100 - 150x + I0x2 where T and x have units of °C and meters, respectively. Temperature variations are small over the shaft cross section. Evaluate the temperature and conduction heat rate at the shaft-pipeline joint (x = 0) and at the shaft-ground interface (x = 1 m)
Elemental iodine (I2) is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid?
Propane is isothermally compressed from 0.01 bar, -51.4 °C to 17 bar. The process takes place reversibly in a closed system. Draw the PV graph of the process.
HEAT TRANSFER PROBLEM NO 17- An asbestos pad, square in cross section , measure 0.05 m on a side and increases linearly to 0.1 m on the other end ( see the figure given below.
Choose an initial guess for reactor temperature and pressure within the range provided and simulate the process described - Determine a metric to quantify the reactor performance then use this parameter to optimize the reactor temperature and pressu..
Determine the d-spacing (Å), to 3 decimal places
Propane in the feed to the unit and 80% of the pentane fed to the unit. The mole fraction of butane in the distillate is yB ? 0.4 . The bottom stream contains all of the hexane fed to the unit. Calculate the distillate and bottoms streams flow rate a..
1. It is desired to use 28.32 m 3 /min of air (metered at a pressure of 101.3 kPa and 294.1 K) in a process. This amount of air which is at rest enters the fan suction at a pressure of 741.7 mm Hg and a temperature of 366.3 K and is discharged at a p..
A mixture of acetone and isopropanol containing 50 mol% acetone is to be distilled continuously to produce an overhead product containing 80 mol% acetone and a bottoms containing 25 mol% acetone. If a saturated-liquid feed is employed, if the colu..
The left side of of the mechanical energy equation has three terms: P/p, (1/2)av^2 and gz. show that each of these terms has the dimension of energy per mass of fluid by.... a) converting each term to units of Btu/lbm beginning with pressure in psi, ..
In a 1-1 shell and tube heat exchanger , steam is condensing on the shell side at Tso c and the cold fluid is being heated on the tube side from t1 oc to t2 oc . the following equation relates t2 to the other vari..
How many kilograms of natural gas are flowing through the pipelines per hour ( use different steps required in material balance calculations).
design a heat exchanger for the following dutyreduced crude oil leaving a distillation unit with a flow rate of 3166.04
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